2003 MERCEDES-BENZ CLK320 CABRIOLET key

24 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Start lock-out
Important!
Removing the electronic key from the steering lock
activates the start lock-out. The engine cannot be
started.
Inserting the electronic key in the steering lock
deactivates the start lock-out.
Note:
In case the engine cannot be started (vehicle’s battery is
in order), the system is not operational. Contact an
authorized Mercedes-Benz Center or call 1-800-FOR-
MERCedes (in the USA) or 1-800-387-0100 (in Canada).General notes on the central locking system
If the electronic key is inserted in the steering lock, the
vehicle cannot be locked or unlocked with the remote
control.
If the vehicle cannot be locked or unlocked:
•Aim transmitter eye at a receiver of either door
handle. Check the batteries of the electronic key, see
page 285, or synchronize the remote control, see
page 287.
•Use the mechanical key to unlock the driver’s door.
To start the engine, insert the electronic key in the
steering lock. There could be a slight delay until the
electronic key can be turned in the steering lock.
Important!
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
steering lock or press buttonŒ or‹ on the
electronic key.

25 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Central locking system
Radio frequency and infrared remote control
The electronic key has an integrated radio frequency
and infrared remote control.
Due to the extended operational range of the remote
control, it could be possible to unintentionally lock or
unlock the vehicle by pressing the transmit button. If
one of the transmit buttons is pressed, the battery check
lamp lights up briefly – indicating that the batteries are
in order. See page 285 for checking batteries.
The vehicle doors, trunk and fuel filler flap can be
centrally locked and unlocked via remote control.
Opening and closing the windows remotely can only be
done with the infrared portion of the remote control.
Aim transmitter eye at a receiver (6 or 7), press and
hold transmit button Œ or ‹.
If the electronic key is inserted in steering lock, the
vehicle cannot be locked or unlocked with the remote
control.1Transmit button
‹ Locking
ΠUnlocking
Š Opening trunk
2Lamp for battery check (see page 285 for changing
batteries if it does not light up briefly)
3PANIC button
4Transmitter eye
5Locking tab for mechanical key
P80.35-2032-26
24
3
5
1

27 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Locking and unlocking with remote control
Unlocking:
Press transmit button Œ. All turn signal lamps blink
once to indicate that the vehicle is unlocked.
The remote control can be programmed for two kinds of
unlocking modes (see below):
Selective unlocking mode –
Press transmit button Œ o nce to un lock dr iver’s d oor
and fuel filler flap.
Press transmit button Πtwice to unlock both doors,
fuel filler flap, and trunk.
Global unlocking mode –
Press transmit button Πonce to unlock both doors,
fuel filler flap, and trunk.
Notes:
The presently active unlocking mode (selective or
global) can only be determined by unlocking the vehicle
with the remote control (see below for changing mode).If within 40 seconds of unlocking with the remote
control, neither door nor trunk is opened, the electronic
key is not inserted in the steering lock, or the central
locking switch is not activated, the vehicle will
automatically lock.
Locking:
Press transmit button ‹ once. All turn signal lamps
blink three times to indicate that the vehicle is locked.
If they do not blink three times, a door or trunk is not
properly closed.
Note:
If the vehicle cannot be locked or unlocked by pressing
the transmit button, then it may be necessary to change
the batteries in the electronic key (if ok, battery check
lamp in electronic key will light briefly when pressing
transmit button) or to synchronize the remote control,
see pages 285 and 287.

29 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Opening and closing windows from outside
Aim transmitter eye of remote control at a door receiver.
To o pen :
Continue to press transmit button Πafter unlocking
the vehicle.
The windows begin to open after approx. 1 second.
To interrupt opening procedure, release transmit
button.
To c lo se:
Continue to press transmit button ‹ after locking
the vehicle.
The windows begin to close after approx. 1 second.
To interrupt closing procedure, release transmit button.Note:
If the windows cannot be operated automatically by
pressing the transmit button of the remote control then
it may be necessary to change the batteries in the
electronic key (if ok, battery check lamp in electronic
key will light briefly when pressing transmit button), or
to synchronize the remote control, see page 285
and 287.
Wa r n i n g !
Never operate the windows if there is the
possibility of anyone being harmed by the opening
or closing procedure.In case the procedure causes potential danger, the
procedure can be immediately halted by releasing
the remote control button. To reverse direction of
movement, press Œ for opening or ‹ for
closing.

30 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
Panic button
To activate press and hold button (1) for at least one
second. An audible alarm and blinking exterior lamps
will operate for approximately 3 minutes.
To deactivate press button (1) again, or insert electronic
key in steering lock.Note:
For operation in the USA only: This device complies
with Part 15 of the FCC Rules. Operation is subject to
the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received,
including interference that may cause undesired
operation.
Any unauthorized modification to this device could void
to the user’s authority to operate the equipment.
Mechanical keys
The mechanical keys work only in the driver’s door,
trunk, and storage compartment locks.
Notes:
The mechanical key does not operate the central locking
system or antitheft alarm system.
The fuel filler flap cannot be locked or unlocked with
the mechanical key.
P80.35-2035-26
1

31 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Doors
1Opening – pull handle
2Unlocking driver’s door
3Locking driver’s door
4Individual door from inside:
•Push lock button down to lock.
•Pull inside door handle to unlock.Important!
The mechanical key does not operate the central locking
system or antitheft alarm system.
When you lock the driver’s door with the mechanical
key, the door lock button should move down.
The passenger door must be locked with the door lock
button – the driver’s door can only be locked when it is
closed.
1
1 2 3

32 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index
If the vehicle has previously been locked from the
outside, opening a door from the inside will trigger the
alarm. When opening a door while the central locking
system is in the:
•selective unlocking mode, only that individual door
is unlocked. The remaining door, the trunk and fuel
filler flap remain locked,
•global unlocking mode, both doors, the trunk and
fuel filler flap are unlocked.
Notes:
When opening a door, the door window lowers slightly.
After closing the door, the window closes again.
In case of a malfunction in the central locking system
the doors can be locked and unlocked individually.To lock, push down lock button and turn mechanical key
in driver’s door lock to position 3. In addition lock the
trunk.
To unlock, pull inside door handle and turn mechanical
key in driver’s door lock to position 2.
When unlocking the driver’s door with the mechanical
key, the exterior lamps will flash and the alarm will
sound.
To cancel the alarm, insert the electronic key in the
steering lock or press buttonŒ or‹ on the
electronic key.

33 Central locking system
Te ch n i c a l
data Instruments
and controlsOperationDrivingInstrument
cluster displayPractical hints Car care Index Central locking switch
1Locking
2Unlocking
The central locking switch is located in the center
console.
The doors and trunk can only be locked with the central
locking switch, if both doors are closed.
If the vehicle was previously locked with the central
locking switch, while in the selective remote control
mode, only the door opened from the inside is unlocked.If the vehicle was previously locked with the central
locking switch, while in the global remote control mode,
the complete vehicle is unlocked when a door is opened
from the inside.
Notes:
If the vehicle was previously locked with the remote
control, the doors and trunk cannot be unlocked with
the central locking switch.
If the vehicle has previously been locked from the
outside, opening a door with the inside door handle will
trigger the alarm. To cancel the alarm, insert the
electronic key in the steering lock or press buttonŒ
or‹ on the electronic key.
The fuel filler flap cannot be locked or unlocked with
the central locking switch.
Wa r n i n g !
When leaving the vehicle, always remove the
electronic key from the steering lock, and lock your
vehicle. Do not leave children unattended in the
vehicle, or with access to an unlocked vehicle.
Unsupervised use of vehicle equipment may cause
an accident and/or serious personal injury.